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WS-C3850-12XS-S
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Cisco Catalyst 3850 12 Port 10G Fiber Switch IP Base
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Name:
WS-C3850-12XS-S
- Description:
- Cisco Catalyst 3850 12 Port 10G Fiber Switch IP Base
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0662644171975
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 90
- List Price:
$700.00
- Price:
$495.0029.3% off
Quantity:
1
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WS-C3850-12XS-S Overview
WS-C3850-12XS-S is a high-performance, stackable switch designed with a robust fixed-configuration architecture that supports both Layer 2 and Layer 3 functions, making it ideal for enterprise networking environments. Its design features 12 high-speed 10-Gigabit SFP+ ports, ensuring superior performance and scalability for demanding applications such as data center interconnects, server clustering, and high-bandwidth campus networks.
Optimized for efficiency and expansion, the WS-C3850-12XS-S offers versatile power options via an AC power supply and supports seamless stacking through Cisco StackWise technology. This combination delivers reliable performance coupled with simplified management, making the switch well-suited for dynamic network infrastructures that require rapid deployment, future growth, and high throughput for mission-critical applications.
WS-C3850-12XS-S price is $1,350.00, a 95.3% saving from the Cisco list price of $28,808.00. WS-C3850-12XS-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3850-12XS-S for additional pricing. Browse the full Catalyst 3850 Switches series or explore all Cisco products.
WS-C3850-12XS-S Specifications
- Product Type
- Switch
- Brand
- Cisco
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Manageable
- Managed
- Redundant Power Supply Supported
- No
- IOS
- LAN Base
- POE Support
- Non POE
- Rack Units
- 1 RU
- Switching Capacity
- 160 Gbps
- Height
- 1.73 inches
- Flash Memory
- 256 MB
- Width
- 17.5 inches
- Number of Ethernet Ports
- 12–24 Ports
- Power Consumption
- 370W
- Uplink Configuration
- 10G
- Number of Downlink Ports
- 12 Ports
- Memory
- 4 GB
- Media Type Supported
- Fiber
- SFP Ports
- 12 SFP Ports
- Weight
- 18 lbs
- Switching Capacity with Stacking
- 480 Gbps
- Ethernet Technology
- 10G
- Manufacturer Part Number
- WS-C3850-12XS-S
- Port/Expansion Slot Details
- 12 x 10-Gigabit SFP+ ports
- Product Name
- Cisco Catalyst 3850-12XS-S
- Depth
- 14.1 inches
WS-C3850-12XS-S Use Case
Ultra-Low-Latency Backbone for Financial Trading Floors
In high-frequency trading environments where every microsecond counts, the WS-C3850-12XS-S Cisco Catalyst 3850 12 Port 10G Fiber Switch IP Base acts as a dedicated ultra-low-latency backbone. Deployed between trading servers, market data feeds, and order-management systems, it delivers deterministic forwarding, hardware-based QoS, and wire-speed 10G fiber connectivity. The outcome is reduced packet-processing delay, prioritized mission-critical traffic and measurable gains in trade execution speed, enabling firms to outpace competitors and mitigate market risk.
Scalable Campus Distribution for Enterprise and Higher-Ed Networks
In large corporate and university campuses requiring robust, future-proof distribution layers, the WS-C3850-12XS-S provides 12 dedicated 10G SFP+ fiber uplinks to aggregate multiple access switches. It integrates seamlessly with Cisco DNA Center for policy-driven automation and advanced security enforcement. The switch’s high-density 10G ports and IP Base feature set ensure non-stop campus-wide connectivity, simplify network operations, and support skyrocketing bandwidth demands from cloud applications, video collaboration and IoT deployments.
High-Performance Data Center Top-of-Rack Aggregation
In mid-size data centers requiring cost-effective Top-of-Rack (ToR) aggregation, the WS-C3850-12XS-S delivers 12 10G fiber links to servers, storage arrays and spine switches. With extensive multicast support, VLAN segmentation and advanced security features in the IP Base image, it streamlines traffic consolidation, reduces cabling complexity and enforces east-west segmentation. The result is a simplified architecture with predictable 10G performance, improved fault isolation and lower operational overhead for dynamic virtualization and software-defined workloads.
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Product Comparison Table 
| WS-C3850-12XS-S |  WS-C3850-48T-L |  WS-C3850-48XS-F-S |  WS-C3850-48P-S | |
|---|---|---|---|---|
| Depth | 14.1 inches | 11.10 inches | 12 inches | 450 mm |
| Ethernet Technology | 10G | 10/100/1000 | 10G | Gigabit Ethernet |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-Mount 1U |
| Height | 1.73 inches | 1.73 inches | 1.73 inches | 45 mm |
| Manufacturer Part Number | WS-C3850-12XS-S | WS-C3850-48T-L | WS-C3850-48XS-F-S | WS-C3850-48P-S |
| Media Type Supported | Fiber | Twisted Pair | Fiber | Twisted Pair / Fiber |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB |
| Power Consumption | 370W | 370 W | 370W | 715W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC |
| Product Type | Switch | Switch | Switch | Network Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1U |
| Switching Capacity | 160 Gbps | 176 Gbps | 1280 Gbps | 176 Gbps |
| Weight | 18 lbs | 27.3 lbs | 28 lbs | 7.9 kg |
| Width | 17.5 inches | 17.32 inches | 17.5 inches | 445 mm |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
F
Fred Lawson
4
10G fiber ports provided excellent speed and consistency.
G
Gordon Miles
4
Reliable access switch for high-speed connectivity.
H
Harold Jenkins
4
Handled sustained traffic without issues.
I
Isaac Newman
5
Cisco build quality with predictable performance.
J
Jason Wright
5
Strong option for compact 10G access.
Questions & Answers
What is the Cisco Catalyst 3850 12 Port 10G Fiber Switch IP Base (WS-C3850-12XS-S)?
The Cisco Catalyst 3850 12 Port 10G Fiber Switch IP Base (WS-C3850-12XS-S) is a stackable fixed-configuration switch delivering 12 SFP+ 10-Gigabit fiber ports with IP Base software for advanced Layer 2 and basic Layer 3 networking.
How many 10-Gigabit fiber ports does the WS-C3850-12XS-S provide?
It provides 12 fixed 10 Gigabit SFP+ fiber ports for high-density uplink and aggregation.
What software license does the WS-C3850-12XS-S include by default?
It includes the Cisco IP Base software license, enabling advanced Layer 2 features and basic Layer 3 static/rip routing capabilities.
Can I stack WS-C3850-12XS-S switches, and what is the maximum stack size?
Yes. It supports Cisco StackWise-480 technology, allowing up to nine switches per stack with 480 Gbps of stacking bandwidth.
What is the switching capacity and performance of the WS-C3850-12XS-S?
It delivers 480 Gbps of switching capacity and up to 720 million packets per second (mpps) of forwarding performance.
Which routing protocols are available under the IP Base license on WS-C3850-12XS-S?
The IP Base license supports static routing and RIP. Advanced protocols such as OSPF, EIGRP, and BGP require the Network Advantage license upgrade.
What management options are available for the WS-C3850-12XS-S?
Management is available via Cisco IOS XE CLI, Cisco DNA Center GUI, SNMP, and REST APIs for comprehensive automation and monitoring.
Does the WS-C3850-12XS-S support Power over Ethernet (PoE)?
No. The WS-C3850-12XS-S is a fiber-only switch and does not support PoE.
What are the power and cooling specifications of the WS-C3850-12XS-S?
It ships with an internal 100–240 V AC power supply and hot-swappable redundant fans, operating in ambient temperatures from 0 °C to 40 °C.
What warranty and support options are available for the WS-C3850-12XS-S?
It comes with a one-year limited hardware warranty. Cisco SMARTnet contracts provide 24×7 technical support and software updates.
Is the WS-C3850-12XS-S suitable for campus distribution and data center aggregation?
Yes. Its high-density 10 Gigabit fiber ports, advanced QoS, and stacking make it ideal for campus distribution and small data center aggregation layers.
What are the physical dimensions and weight of the WS-C3850-12XS-S?
Its dimensions are 1.73 × 17.5 × 14.0 inches (H×W×D) and it weighs 12.15 lbs (5.51 kg).
How can I upgrade my WS-C3850-12XS-S to enable advanced Layer 3 features?
Purchase the Network Advantage license from Cisco and install it via the software licensing portal—no hardware changes are required.
What is the packet forwarding capacity of the WS-C3850-12XS-S?
The switch can forward up to 720 million packets per second (mpps) to support high-performance network environments.
Which SFP+ transceivers are compatible with the WS-C3850-12XS-S?
It supports Cisco SFP-10G series transceivers, including SFP-10G-SR, SFP-10G-LR, and SFP-10G-ER modules for multimode and single-mode fiber links.
How do I install and configure the WS-C3850-12XS-S?
Rack-mount the switch, connect power and fiber modules, then use the Cisco IOS XE CLI or Cisco DNA Center GUI for initial setup following the Quick Start Guide.